The following data gives the number of hours 77 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying Midterm Grades 0.5 66 2.5 72 3 78 3.5 81 4.5 90 5 93 5.5 96 Step 1 of 3 : Calculate the correlation coefficient, r. Round your answer to six decimal places.

The following data gives the number of hours 77 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying Midterm Grades 0.5 66 2.5 72 3 78 3.5 81 4.5 90 5 93 5.5 96 Step 1 of 3 : Calculate the correlation coefficient, r. Round your answer to six decimal places.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 23PFA

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Question

The following data gives the number of hours 77 students spent studying and their corresponding grades on their midterm exams.

Hours Spent Studying Midterm Grades
0.5 66
2.5 72
3 78
3.5 81
4.5 90
5 93
5.5 96

Step 1 of 3 :

Calculate the correlation coefficient, r. Round your answer to six decimal places.

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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